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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> fall# Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /971117-M2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9711 C66-01 Reported Dec 10, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,2,4 Trichloro- 4-Chloro 3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> QC Batch# MS1118978270E:XA MS1118978270EXA MS1 11 8978270EXA MS1118978270EXA <br /> Analy Method. EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst E Manuel E Manuel E Manuel E Manuel <br /> MS/MSD # 971189103 971189103 971189103 971189103 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 11/18/97 11/18/97 11/18/97 11/18/97 <br /> Analyzed Date 11/18/97 11/18/97 11/18/97 11/18/97 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conc Spiked 200 ug/L 200pg/L 200 ug/L 200Ng/L <br /> Result 145 157 139 45 <br /> MS % Recovery 73 79 70 23 <br /> Dup Result 159 166 145 44 <br /> MSD % Recov 80 83 73 22 <br /> RPD 92 56 42 22 <br /> RPD Limit 0-30 0-30 030 0-30 <br /> LCS # LCS112497 LCS112497 LCS112497 LCS112497 <br /> Prepared Date 11/24/97 11/24/97 11/24/97 11/24/97 <br /> Analyzed Date 11/25/97 11/25/97 11/25/97 11/25/97 <br /> Instrument LD # F4 F4 F4 F4 <br /> Conc Spiked 200ug/L 200pg/L 200ug/L 200 ug/L <br /> LCS Result 143 158 128 58 <br /> LCS %Recov 72 79 64 29 <br /> LCS <br /> Control Limits 39-98 23-97 46-118 10-80 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> �SE101 NALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Pe **MS=Matrix Spike, MSD=MS Duplicate,RPD-Relative% Difference <br /> Prger Page 2 of 3 9711066 BLA <8> <br />